:root {
  --ink: #07243a;
  --muted: #5b6b78;
  --line: #dbe6ec;
  --paper: #f7fbfd;
  --white: #ffffff;
  --teal: #00a9b4;
  --teal-dark: #087b88;
  --blue: #0d5fce;
  --gold: #f6c443;
  --shadow: 0 22px 70px rgba(4, 34, 55, 0.14);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 76px;
  padding: 14px clamp(18px, 4vw, 64px);
  background: rgba(247, 251, 253, 0.88);
  border-bottom: 1px solid rgba(219, 230, 236, 0.72);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 34px rgba(7, 36, 58, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: max-content;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: linear-gradient(135deg, var(--teal), var(--blue));
  border-radius: 8px;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 17px;
  letter-spacing: 0;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav {
  display: flex;
  justify-content: center;
  gap: 26px;
  width: 100%;
  color: #315066;
  font-size: 15px;
  font-weight: 700;
}

.nav a:hover {
  color: var(--teal-dark);
}

.header-cta,
.button,
.plan-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: var(--radius);
  font-weight: 800;
  white-space: nowrap;
}

.header-cta,
.button.primary,
.plan-card a {
  color: var(--white);
  background: linear-gradient(135deg, var(--teal), var(--blue));
  box-shadow: 0 12px 30px rgba(0, 143, 181, 0.26);
}

.button.secondary {
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.menu-button span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  gap: clamp(34px, 5vw, 74px);
  align-items: center;
  min-height: 760px;
  padding: clamp(48px, 6vw, 86px) clamp(18px, 5vw, 78px) 62px;
  background:
    radial-gradient(circle at 18% 15%, rgba(0, 169, 180, 0.14), transparent 32%),
    linear-gradient(180deg, #f8fdff 0%, #eef8fb 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 830px;
  margin-bottom: 22px;
  font-size: clamp(46px, 6vw, 82px);
  line-height: 0.98;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.04;
}

h3 {
  margin-bottom: 10px;
  font-size: 24px;
}

.hero-text {
  max-width: 680px;
  color: #40596b;
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-proof span {
  padding: 10px 14px;
  color: #315066;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 14px;
}

.hero-visual {
  position: relative;
  overflow: hidden;
  min-height: 560px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-visual img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.speed-card {
  position: absolute;
  right: 28px;
  bottom: 28px;
  width: min(280px, calc(100% - 56px));
  padding: 22px;
  color: var(--white);
  background: rgba(7, 36, 58, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  backdrop-filter: blur(10px);
}

.speed-card span,
.speed-card small {
  display: block;
  color: #cde8f0;
  font-weight: 800;
  text-transform: uppercase;
}

.speed-card strong {
  display: block;
  margin: 4px 0;
  font-size: 64px;
  line-height: 1;
}

.section {
  padding: clamp(62px, 7vw, 100px) clamp(18px, 5vw, 78px);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 0.88fr;
  gap: 44px;
  align-items: start;
  background: var(--white);
}

.intro-grid p:last-child {
  color: var(--muted);
  font-size: 21px;
}

.stats-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  padding-top: 0;
  padding-bottom: 0;
  background: #0b3956;
}

.stats-band article {
  padding: 38px;
  color: var(--white);
  background: #0b3956;
}

.stats-band strong {
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 34px;
}

.stats-band span {
  color: #d7e9ef;
}

.plans {
  background: #f4fafc;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-heading p:last-child {
  color: var(--muted);
  font-size: 18px;
}

.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.plan-card {
  padding: 30px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 40px rgba(7, 36, 58, 0.06);
}

.plan-card.featured {
  color: var(--white);
  background: linear-gradient(145deg, #073351, #087b88);
  border-color: transparent;
  transform: translateY(-12px);
}

.plan-label {
  display: inline-block;
  margin-bottom: 22px;
  padding: 6px 10px;
  color: var(--teal-dark);
  background: #e5f8fa;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.featured .plan-label {
  color: var(--ink);
  background: var(--gold);
}

.plan-card p {
  color: var(--muted);
}

.plan-card.featured p,
.plan-card.featured li {
  color: #dff5f7;
}

.plan-card ul {
  display: grid;
  gap: 10px;
  min-height: 118px;
  margin: 24px 0;
  padding: 0;
  list-style: none;
}

.plan-card li {
  position: relative;
  padding-left: 24px;
  color: #40596b;
}

.plan-card li::before {
  position: absolute;
  left: 0;
  color: var(--teal);
  content: "✓";
  font-weight: 900;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  gap: clamp(30px, 5vw, 70px);
  align-items: center;
  padding: clamp(62px, 7vw, 100px) clamp(18px, 5vw, 78px);
  background: var(--white);
}

.split-image {
  overflow: hidden;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.split-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.service-list {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.service-list article {
  padding: 20px 22px;
  border-left: 4px solid var(--teal);
  background: #f5fafc;
  border-radius: 0 8px 8px 0;
}

.service-list p {
  margin: 0;
  color: var(--muted);
}

.coverage {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 34px;
  align-items: center;
  background:
    linear-gradient(135deg, rgba(7, 36, 58, 0.92), rgba(8, 123, 136, 0.9)),
    url("../img/network-texture.png") center/cover;
  color: var(--white);
}

.coverage .eyebrow {
  color: var(--gold);
}

.coverage p {
  color: #d8eef2;
  font-size: 18px;
}

.coverage .button {
  margin-top: 16px;
}

.steps {
  display: grid;
  gap: 16px;
}

.steps article {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 6px 18px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
}

.steps span {
  grid-row: span 2;
  color: var(--gold);
  font-size: 30px;
  font-weight: 900;
}

.steps strong {
  font-size: 21px;
}

.steps p {
  margin: 0;
}

.support {
  background: var(--white);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 28px;
  background: #f4fafc;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-panel span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.contact-panel a:not(.button) {
  color: var(--ink);
  font-size: 22px;
  font-weight: 900;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 26px;
  padding: 36px clamp(18px, 5vw, 78px);
  color: #cfe4eb;
  background: #062337;
}

.footer p {
  margin: 8px 0 0;
  color: #9db9c5;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  font-weight: 800;
}

@media (max-width: 980px) {
  .nav,
  .header-cta {
    display: none;
  }

  .site-header {
    justify-content: space-between;
  }

  .menu-button {
    display: block;
  }

  .site-header.menu-open .nav {
    position: absolute;
    top: 75px;
    right: 18px;
    left: 18px;
    display: grid;
    gap: 0;
    padding: 12px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-header.menu-open .nav a {
    padding: 14px;
  }

  .hero,
  .intro-grid,
  .split-section,
  .coverage {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual,
  .hero-visual img {
    min-height: 420px;
  }

  .stats-band,
  .plan-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .plan-card.featured {
    transform: none;
  }

  .split-image img {
    height: auto;
  }

  .footer {
    display: grid;
  }
}

@media (max-width: 620px) {
  .brand strong {
    font-size: 15px;
  }

  .brand small {
    font-size: 11px;
  }

  h1 {
    font-size: 43px;
  }

  h2 {
    font-size: 33px;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .speed-card {
    right: 16px;
    bottom: 16px;
  }

  .speed-card strong {
    font-size: 50px;
  }

  .plan-card,
  .stats-band article,
  .contact-panel {
    padding: 24px;
  }

  .contact-panel a:not(.button) {
    font-size: 19px;
  }
}